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OpenGL/contextinfo-Example: Add command line options and status label.

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Add command line options to be able to set the QCoreApplication attributes
that influence Open GL context creation and add a status label at the
bottom that displays it besides the QT_OPENGL environment variable.

Task-number: QTBUG-52693
Change-Id: Id9793292596e0feb3da5220fde2e5b2e495f87ff
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
This commit is contained in:
Friedemann Kleint 2016-04-20 09:27:18 +02:00 committed by Friedemann Kleint
parent 84a49594d0
commit 759b3f49c5
2 changed files with 29 additions and 0 deletions
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9
examples/opengl/contextinfo/main.cpp
View File

@ -43,6 +43,15 @@
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
for (int i = 1; i < argc; ++i) {
if (!qstrcmp(argv[i], "-g"))
QCoreApplication::setAttribute(Qt::AA_UseOpenGLES);
else if (!qstrcmp(argv[i], "-s"))
QCoreApplication::setAttribute(Qt::AA_UseSoftwareOpenGL);
else if (!qstrcmp(argv[i], "-d"))
QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
}
QApplication app(argc, argv); QApplication app(argc, argv);
Widget w; Widget w;

20
examples/opengl/contextinfo/widget.cpp
View File

@ -50,10 +50,12 @@
#include <QPushButton> #include <QPushButton>
#include <QTextEdit> #include <QTextEdit>
#include <QSplitter> #include <QSplitter>
#include <QGuiApplication>
#include <QSurfaceFormat> #include <QSurfaceFormat>
#include <QOpenGLContext> #include <QOpenGLContext>
#include <QOpenGLFunctions> #include <QOpenGLFunctions>
#include <QDebug> #include <QDebug>
#include <QTextStream>
struct Version { struct Version {
const char *str; const char *str;
@ -225,6 +227,24 @@ Widget::Widget(QWidget *parent)
m_renderWindowContainer = new QWidget; m_renderWindowContainer = new QWidget;
addRenderWindow(); addRenderWindow();
QString description;
QTextStream str(&description);
str << "Qt " << QT_VERSION_STR << ' ' << QGuiApplication::platformName();
const char *openGlVariables[] =
{"QT_ANGLE_PLATFORM", "QT_OPENGL", "QT_OPENGL_BUGLIST", "QT_OPENGL_DLL"};
const size_t variableCount = sizeof(openGlVariables) / sizeof(openGlVariables[0]);
for (size_t v = 0; v < variableCount; ++v) {
if (qEnvironmentVariableIsSet(openGlVariables[v]))
str << ' ' << openGlVariables[v] << '=' << qgetenv(openGlVariables[v]);
}
if (QCoreApplication::testAttribute(Qt::AA_UseOpenGLES))
str << " Qt::AA_UseOpenGLES";
if (QCoreApplication::testAttribute(Qt::AA_UseSoftwareOpenGL))
str << " Qt::AA_UseSoftwareOpenGL";
if (QCoreApplication::testAttribute(Qt::AA_UseDesktopOpenGL))
str << " Qt::AA_UseSoftwareOpenGL";
layout->addWidget(new QLabel(description));
setLayout(layout); setLayout(layout);
} }